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UUID Generator

Generate, validate, and inspect universally unique identifiers

Time-based

UUID V1

969ae580-6759-11f1-9d90-6baf76316a21
Random

UUID V4

06d55c18-939e-49fd-b1b3-db68fc656273
Name-based

UUID V5

91dd98e3-b09f-5085-aa3e-a4d0121199ba

Batch Generator

Version

UUID Validator

Paste a UUID to check if it's valid and identify its version.

UUID Versions Explained

Version 1

Uses the current timestamp and MAC address. Guarantees uniqueness but may expose hardware identity.

Version 4

Purely random. The most commonly used version — simple, private, and virtually zero collision probability.

Version 5

Derived from a namespace + name using SHA-1. Deterministic: the same inputs always produce the same UUID.